The slant height of a right circular cone is 15 m and its height is 9 m. The area of its curved surface, is:
Given, Slant height of the cone (l) = 15 m.
Height = 9 m
Radius of the cone = $$\sqrt{15^2 - 9^2} = \sqrt{225 - 81} = \sqrt{144}$$ = 12 m
Therefore, Curved Surface Area of the cone = $$\pi \times 12 \times 15 = 180\pi m^2$$
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